I am trying to add an additional domain controller using Windows 2019 Standard in a Windows 2012 R2 environment. As far as I can tell, this is supported by Microsoft.

When trying to promote the new server to a DC, I get an error that the wizard cannot gain access to the list of domains in the forest. The extra information states that the RPC server is unavailable. I have added temporary firewall rules to allow ALL inbound and outbound TCP and UDP traffic (just to see if I can get it to work), but that does not work.

Screenshot of error

I also verified many services are running on this machine as well as the "primary" domain controller.

Any suggestions?

migrated from superuser.com May 29 at 13:27

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  • 1
    Hi, please make sure the DNS server on the NIC for that server is set correctly to the other DC. a ping domain.name should return a value – yagmoth555 May 29 at 13:31
  • It is set correctly. – AZinNC Jun 18 at 18:58

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